知乎 on MSN

两个人同时操纵数据库，怎么处理并发问题?

这不是一条 SQL 就搞定的事情吗？ 我曾经负责过的并发量蛮高的商品库存系统，核心扣减逻辑真的就是靠一条 SQL 搞定的。没有引入分布式锁（如 Redis Lock）或者消息队列。 核心思路其实就是数据库层面的乐观锁。利用 MySQL 的行锁特性 + UPDATE 语句的原子性，再配合 Java 中判断影响行数（Affected ...
InfoQ中国 on MSN

Java近期资讯：JDK 26候选发布版、Spring Framework、Open Liberty、EclipseStore ...

JDK 27 JDK 27的早期访问构建版本Build 9也在上周发布，包含了从Build 8的更新，其中包括对各种问题的修复。关于这个版本的更多细节可以在发布说明中找到。 JDK 26 JDK 26的早期访问构建版本Build ...
TheServerSide

Java array size, length and loop examples

Community driven content discussing all aspects of software development from DevOps to design patterns. Here are the most important concepts developers must know when they size Java arrays and deal ...
InfoQ

Null-Restricted and Nullable Types for Java

Unlock the full InfoQ experience by logging in! Stay updated with your favorite authors and topics, engage with content, and download exclusive resources. Cory Benfield discusses the evolution of ...
InfoWorld

How to use assertions in Java

Developers make assumptions about how our code will behave when executed, but we’re not always right. Without certainty, it is challenging to write programs that work correctly at runtime. Java ...
InfoWorld

Does Java pass by reference or pass by value?

You might know that Java passes by value, but it helps to understand why. Here's what happens when you pass mutable and immutable object references in Java. Many programming languages allow passing ...
InfoQ

Porting Million Lines of Code from Java to Kotlin at Meta

A monthly overview of things you need to know as an architect or aspiring architect. Unlock the full InfoQ experience by logging in! Stay updated with your favorite authors and topics, engage with ...
IEEE

NPEX: Repairing Java Null Pointer Exceptions without Tests

Abstract: We present NPEX, a new technique for repairing Java null pointer exceptions (NPEs) without tests. State-of-the-art NPE repair techniques rely on test suites written by developers for patch ...